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W. A. MINOR DEEP WELL PUMP Filed Aug. 24, 1926 r 5 Rm n O1 N T R N, O Wn m A m 5 ton Patented Jan. 10, 1.92s.

UNITED "STATES gas earner caries.

W'ILIJIAM A. MINOR, OF ROCHESTER, NEW YORK, ASSEGNOR '10 LUITWIELER PUMPII-TG- ENGINE COMPANY, 015 ROCHESTER, NEW YORK, A COR-PQRATION OF NEWYORK.

DEEP-WELL PUMP.

Application filed Augustfll, 1926. Serial No. 131,293.

The present invention relates to deep well pumps and more particularlyto the type in which two oppositely movable plstons or buckets areemployed, one of which is arranged above the other and has the operatingrod of the latter extending therethrough. An object of this invention 1sto provide apiston body formed with an annular valve seat and having aguide ex tending upwardly from the body below the valve seat andupwardly through the latter, on which is guided this valve member whichhas a packing relation to the guide to prevent the passage of waterthrough the valve. Another object of this invention is to provide indeep well pumps of this type an upper piston which has a tubular guidepro- 'Jecting upwardly from the body from' a point below thevalve seataround the rod of the lower piston, and on which the valve of the pistonoperates so that the valve is maintained in proper centered relation tothe valve seat by the guide notwithstanding distortion of the rod.Another object of this invention is to provide, in deep well pumps ofthis type, an upper piston that is particularly adapted to 111111111111water that contains a considerable portion of sand and one in which thevalve. member has but one seat and carries a packing cooperating with aguide portion extending upwardly from the body of the piston about therod of the lower piston. Still another object of the invention is toprovide an iu per pisconstruclion in which the valve meniher has apacked relationwith a guide surrounding the rod of the lower piston, anda packing is interposed between the body of the piston and the rod belowthe valve so that the leakage of water around the rod of the lowerpiston is entirely prevented. Still another object of the inventioi'i isto provide between the body of an upper piston-and the rod of a lowerpiston, a packing mounted for loose movement so as to maintain a tightpacking even when the body of the upper piston has been considerablyworn from long use. Still another object of the invention is to providea flexible packing at the extreme top of a piston body for contact witha cylindrical. wall above the actual body of the piston to wipe out sandor grit from the inside of the cylinder as the piston travels therein.

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To these and other ends, the invention consists in certain parts andcombinations of parts, all of which will be hereinafter described: thenovel features being pointed out in the appended claims.

In the drawings:

Fig. 1 is a view of the fragment of a cylinder with the upper pistontherein shown one-half in elevated and the other half in diametricsection;

Fig. 2 is a fragmentary diametric section through the upper piston;

Fig. 3 is a section on the line 3 3, Fig. l; and

Fig. 4: is a. section on the line H, Fig. 1.

The present invention has to do with deep well pumps which employ acylinder and at least two pistons operating therein one above the other,the lower piston having a rod extending through the upper piston andalso through a hollow rod through which the up ierpiston is operated.For the pur pose of simplicity in illustration fragments only of thecylinder and the rod of the lower piston are shown, the lower piston notbeing illustrated. 1 indicates the cylinder and 2 the rod of the lowerpiston. The upper piston embodies a body 3 and'a cage which hasa screwthreaded upper end 4 to which the hollow rod 5, which operates the upperpiston,connects. This cage is of substantially iri'istro-cmiical formwith the open ings 6 in its sides through which the wa ter may pass. Thelower end of this cage has a ring 7""whieh is internally threaded toengage external threads on a reduced portion 8 of the body. This ring 7also has an annular shoulder 9 on its ring portion 7 which forms anabutment for one side of a cup packing 12, the other side of said cuppacking abutting one side of a spacing ring 10 which surrounds the body3 and also the ring portion 7 of the cage. This cup pack ing is turnedupwardly so that its upper edge is above the annular valve seat 11formed at the upper end of the reduced portion 8 of the piston body.Thisvalve seat tapers vinwardly and as a consequence, the collection ofsand about the valve seat is reduced to a ininin'nnn as the upper edgeof the packing tends to maintain the inner face of the cylinder clearfrom sand and to deflect the sand into the path ofthe water as thelatter surges through the piston body. Furltll) body extension 15.

ring 17 secured thereto.

ther the collection of sand about the free edge of the upper packing isentirely eliminated, thus preventing the latter becoming hardened andthrough this rendering the upper packing ineffective. Other packingrings 13 are secured about the body 3 between spacing and holding rings14. These packing rings are of cup form and their edges turn upwardly.The packing 12 keeps the sand from collecting between these packings andthe piston body.

The piston body '3 also has a central extension 15 which in thisinstance istubular and surrounds the rod 2 extending upwardly toward thetop portion 01" the cage, this extension preferably being integral withthe piston body. This guide serves to hold the valvemember and is heldthereto by a spacing'ring 19 which surrounds the next packing piece 17.The latter is held in position "by an'externally threaded spacing ring20 engaging the walls of the packing chamber and having also the upperpacking piece or his upper pack- "ingring projects upwardly above thevalve member-to wipe the sand off the guide extension'15, This valvemember packing prevents the passagejof waterthrough the cen terot thevalve member 16 about the guide and maintains a fluid tight condition between the valve member and the guide e):-

tension. Ttalso servesto retard the movement or the valve member. Ahelical spring 21 seats against the valve member 16 and the upper partof the cage to hold the valve member 16 normally to its seat 11.

With the end in view of preventing the passage otwater about the rod 2of the low- 'er bucket through the body 3, the body 3 carries belowv theextension 15 a packing, and, inorder that this packing may adaptiitself'to the rod, notwithstanding wear and distortion between thevalve body and the rod,th1s packing isnionnted to float or movehorizontally and vertically. In this iiistance, the-piston body, has apacking chamberp22preterablyclosed by a ring 23 at its :bottom to holdthe packing in the chamber.

The packing, in this instance, embodies a lower ring 24- abutting thebottom of the packing chamber, and forming an abutment for a packingring 25 which is held in place by a spacingring 26 forming a seatfor apacking ring 27 in turn held in place by a spacing ring 28 which forms aseat for a packing ring 29, the latter being held in place by aretaining ring 30. Bolts 31 pass through the parts 24: to 30, inclusive,and holdthese together as a single packing body. The chamber 22 isenlarged so as to permit this packing body to rise and tall therein,also to move horizontally. The lower ring 24 held in fluid tightcondition with the bottom of the packing chamber when the piston islifting water. 7

From the foregoing it will be seen that there has been provided a pistonwhich has a packing ring above the valve seat thereof cooperating withthe walls of the cylinder of the pump and serving to prevent the accinnulatioii of sand about the piston body and the valve seat. Thepiston body has an extension preferably surrounding, the rod of thelower piston and projecting upwardly to act as a guide tor the valvememher to hold the latter out of engagement with the piston rod in orderthat the piston rod will not shift the valve member with rcierence toits seat due to the distortion or bending of the rod. Furthermore, whenthe valve member of the upper piston is guided on the rod or the lowerpiston, the rod of the lower piston moves relatively to the upper pistonand causes a greatly increased relative movement between the valve andthe rod. With this construction the valve has but a very slight relativemovement on its guide so that wear on the packing is reduced to aminimum. The valve member has a packed relationship to this extension toprevent the passage of water through the valve n'iember and at the sametime to act as a br he or retarder to prevent the too tree action of thevalve member with reference to the piston body. A packing is interposedbetween the piston body and a rod of the lower piston so that the waterabove the valve cannot pass downwardly through the center o'lthe pistonbody. This latter packing is of a floating construction to adapt it sellto the distortion of the lower piston rod and to prevent wear betweenthe upper piston and the lower piston rod atl'ecting its action.

.Vhatl claim as my invention and desire to secure by Letters Patent is:

1. In a deep well pump, the combination with a cylinder, a pistonoperating therein and provided with a central tapered annular valve seatat the upper end of the piston, and a valve movable toward and from aseat, of a plurality of cupped packing rings secured to the body andhaving their edges turned upwardly, and a packing carried by the pistionbody having its free edge above the valve seat and above the upper endof the piston, said last mentioned packing being arranged above theplurality of cupped packings and acting to prevent the entrance of l fisand between the packings and the piston body. I

2. The combination witha piston body having a reduced externallythreaded extension tol-med with a valve seat at its upper end, of a cagehaving a ring at its lower part engaging said screw threaded'extensionand formed with an annular shoulder above its lower edge, a packingseparating ring surrounding the piston body and the lower portion ofthering of the cage, and a packing ring secured between the shoulder onthe ring of the cage and the packing separating ring and having itsupper edge above the valve seat on the reduced extension and above theupper end of the piston body;

3. The combination with a piston body having a reduced externallythreaded tension provided with a valve seatat its upper end, of a cageprovided with a ring engaging said reducedextension, a packingseparating ring surrounding the piston body, and a packing ring heldagainst the packing separating ring by the ring of the cage andextending upwardly above the valve seat on the screw threaded exte sionof the body.

The con'ibination with a piston body having a central operating rodopening therethrough and formed with a seat, of a .aular extensionaligned with said -opening secured to the valve body at its lower endand extendingupwardly from the body to the valve seat, and a valvemember for cooperatingwith the scat guided on said extension.

5. The con'ihination with a piston body having a central operating-rodopening therethrough and provided with a valve seat, a ca e detachablysecured to said piston body an integral extension on the valve bodyextending upwardly through the valve seat to a point above theconnection between the cage and the piston body, and a valve memberslidably mounted on said extension to cooperate with the seat.

6. The combination with an upper piston provided with a valve seat, of atubular valve guided support hy'the piston body, a valve movable on saidguide, a packing interposed between the valve and the guide, and apacking carried by the piston below the valve seat to cooperate with therod of another piston passed through the piston and said tubular valveguide.

7. A piston of the class described comprising a body having a valveseat, a tubular guide surrounded by said valve seat, a valve movable onsaid guide, and a packing ar ranged to prevent the passage of fluid fromone side of the piston to the other through the tubular guide.

8. The combination with a lower piston operating rod, of an upper pistoncomprising a piston body having an opening therethrough for the passageof a rod of a lower piston, an integral extension projecting upwardlyfrom said body in alignment with said opening, a packing ar'anged on thebody below said extension to cooperate with the lower piston operatingrod, a valve seat provided on the body above the lower end or": theextension, a valve member guided on the extension to cooperate with saidseat,

and a packing. arranged between said valve member and said extension.

9. A piston ot the type described comprising a piston body having anopening therethrough through which the rod ot another piston mayoperate, a valve seat carried by the body, a valve movable toward andfrom the seat on said piston, and a floating packing mounted in thepiston body below the valve seat.

10. A piston of the type described comprising a piston body having anannular valve seat, a guide extending upwardly from the body from apoint below the valve seat and centrally through the valve seat, a valvemember moving on the guide and having its upper face formed to shedsand, and a packng carried by the valve member and cooperatingwith theguide to prevent the passage of water through the valve member, saidpacking having a portion projecting above the shedding face of the valvemenu her to wipe the sand off the valve guide.

WILLIAM A. MINOR.

